10-15g of l-glutamine/day. Try to take it on an empty stomach. it doesn't get used effectively when take with protein.

Right after a work out is my favorite time. With dextrose.

Run it the whole time on the cycle. Run it even when not on a cycle. it's always good stuff. It's pretty much the only "essential" supliment to use on a cycle IMO.

Also- there's tons of info on the stuff in the suppliments forum.